Gas and air mixer and governor



(No Model.) 0 F GAS AND AIR MIXER AND GOVERNOR.

Patented Sept. 3, 1889.

M GHommu o/ N. PETERS, i'lmm-mho n lwr, Washmglon. D. c.

UNITED STATES PATENT OFFICE.

CHARLES F. HOVEY, OF SPRINGFIELD, MASSACHUSETTS.

GAS AND AIR MIXER AND GOVERNOR.

SPECIFICATION forming part of Letters Patent No. 410,418, datedSeptember 3, 1889.

Application filed March 19, 1888.

To all whom it may concern.-

Be it known that 1, CHARLES F. HovEY, a citizen of the United States ofAmerica, residing at Springfield, in the county of Hampden and State ofMassachusetts, have invented new and useful Improvements in Gas and AirMixers and Governors, of which the following is a specification.

This invention in gas and air mixing and governing apparatus is in thenature of an improvement on Letters Patent of the United States grantedto me March 13, 1883, No. 273,813, the principal objects of which are toinsure an equilibrium of pressure at the burners or place ofconsumption, and a combining with the gas or carbureted air of suitablequantities or proportions of atmospheric air; and the invention consistsin the construction and combinations of the various parts, allsubstantially as will hereinafter more fully appear, and be set forth inthe claims.

Reference is to be had to the accompanying drawings, forming part ofthis specification, in which corresponding characters of referenceindicate corresponding parts in all the figures.

Figure 1 is a central vertical sect-ion of the apparatus. Fig. 2 is ahorizontal section thereof on the line a". 00, Fig. 1. Fig. 3 is acentral vertical sectional view of the lower portion of the apparatus ina plane at right angles to that of Fig. 1 and as indicated on the linegy, Figs. 1 and 2. Fig. 4 is a per spective view in detail of the valve,to be hereinafter referred to; and Fig. 5 is a transverse section of thevalve at one of its screwholes and a side view of one of the valve-eX-panding screws.

In the drawings, A represents a vertical circular chamber closed at itsbottom and sides, except as to the entrance of the passages thereto,hereinafter described, and at its top open to and in communication withthe chamber of a cylindrical gas-receiver B within the inclosing-case C,said receiver B being open at its lower side an d vertically movablewithin the case or tank 0, under a suitable gas or air pressure thereon.

From opposite sides of the circular chamber A, through its surroundingbody or casting a, are horizontal ports 5 and 6, of suitable Serial No.267,592. (No model.)

width and height, in communication with which ports 5 and 6, at theouter ends of each, are passages 7 and 8, extending downwardly,substantially as shown, and in communication with the outer ends thereofare respectively a gas-pipe J and an air-pipe 10, to be connected with asuitable carburetor or gas supply and with an air-compressor or othersuit able supply, respectively.

From a suitable lower portion of the circular chamber A is anindependent passage 12 through the casting, the outer end of whichpassage 12 is connected with a supply-pipe 13, leading to the burners.

WVithin the circular chamber A is disposed a tubular valve G, open ateach end, provided with an axial hub portion 14 and the intermediatesupporting arms or spokes 15, and also provided in its side walls withports 17 and 18. The said valve is secured upon a vertical stem 11,which by its upper end is secured to the vertically-movable gas-receiverB, and the ports 17 and 18 of said valve. are to be disposed in thecircumference thereof in such a manner that when the entire width of oneof the portssay the one 17-registers with or is opposite the adjacentport 5 in the casing the other valve-port 18 will be turned past or outof a coinciding plane with its re spectively adjacent port 6 in thecasing, as seen in Figs. 2 and 3 particularly; but on a proper turningof the valve to partially close said port 5 the said port 6 will bepartially opened, or the port 5 might be fully closed and the port 6fully opened.

The valve-stem II, as shown, is made in two sections 20 and 21,connected by a universal joint 22, so that notwithstanding any lateralplay of the gas-receiver B as it rises or falls the valve G, hungtherefrom, will not be cramped or bound thereby in its movements alongthe walls of the casing A.

A radial arm 25 is secured to the lower end of the valve-stem, which isforked at its outer end, as shown at 26, between which forked portionsplays a vertical post 28, carried at the outer end of a horizontal arm29, said arm being secured to a vertical arbor 30, having-a bearing inthe bottom of the casing A, and at its outer end provided with asector-gear 31, with the teeth of which meshes a worm-screw 32, hung insuitable bearings 33,

supported from the bottom of the casing a, and provided for its rotationwith ahandwheel 34.

As seen in the drawings, particularly in Figs. 2 and 4, the valve issplit by a longitudinal kerf 50 through its one outer side wall andthrough its hub portion, whereby it is slightly circumferentiallyelastic. One or more screws 55, having the inner part of their headstapered, as shown at 56 in Fig. 5, are passed through transversescrew-holes in the hub, which screw-holes have outwardly-flaring ends57, corresponding with the taper part 56 of the screw-heads. The wallsof the valve are also provided with circular apertures 52, through whicha screw-driver may be inserted for turning the said screws 55, theaction of which by their taper-heads insures an expansion or contractionof the valve to closely fit the casing, as desired.

The operation of the apparatus described is as follows: The valve G isto be turned so as to present its ports 17 and 18 in such relation tothe ports 5 and (3 that the desired proportions of gas and air will fromtheir respective supplies and through the passages 7 and 8 and saidports 5 and 17 and (5 and 18 be allowed to enter the chamber A, in whichchamber, or in the receiver-chamber B, in communication therewith, thesaid gas and air will be intermixed. Thence the intermixed gas and airpasses downwardly and forward through the outlet-passage 12 to theburners. Should the pressure of the gas or air through the passagesdescribed into the chamber A become greater than desired, the receiver Bis upwardly moved, carrying the valve upward, so that the length of theportions of its ports 17 18, which are opposite the ports 5 and (5, isdiminished, and thus the areas of the inlets of the valve decreased,when, under the consequent reduced pressure, the receiver B descends,causing a widening of the inlet areas, and, as will be easilyunderstood, an equilibrium of pressure will be thus m aintained.

What I claim as my invention is 1. The combination,with acircularvertical casin g providedwith lateral inlet-ports in co mmunication withgas and airsupply conduits, and having an outlet-port leading therefrom,a vertically-movable gas-receiver in communication therewith, and aninclosing-tank, of a valve-stem hung from said movable gas-receiver andvertically movable therewith, and a tubular valve secured thereto,provided in its walls with ports arranged to register with saidcasing-ports, a forked radial arm secured to said valve-stem, an arborhaving a bearing in the bottom of the casing provided at its inner endwith a radial arm having a vertical post engaging the said forked arm,and at its outer end provided with a sector-gear, and a worm havinghearings on said casing, engaging with said sector, all substantially asand for the purpose described.

2. The combination, with a circular vertical casin g provided withlateral inlet-p orts in communication with gas and air supply conduitsand having an outlet-port leading therefrom, a vertically-movablegas-recei ver in communication therewith, and an inclosing-tank, of avalve-stem made in sections and connected by a universal joint hung fromsaid movable gasreceiver and vertically movable therewith, a tubularvalve secured thereto, provided in its walls with ports arranged toregister with said casing-ports, a forked radial arm secured to saidvalve-stem, an arbor having a bearing in the bottom of the casing,provided at its inner end with a radial arm having a vertical postengaging the said forked arm, and at its outer end provided with asector-gear, and a worm having hearings on said casing engaging withsaid sector, all substantially as and for the purpose described.

3. In a device for mixing gas and air, the valve herein described,comprising a tubular outer portion provided with ports, an axial hub,and intermediate arms, and having a longitudinal kerf through the outerwall and said hub and provided in said hub with screw-holes with flaringends, and one or more screws provided inside their heads with taperportions, substantially as and for the purpose described.

4:. In a device for mixing gas and air, the valve herein described,comprising a tubular outer portion provided with ports, an axial hub,and intermediate arms, and having a longitudinal kerf through the outerwall and said hub, and provided in said hub with screw-holes withflaring ends and in its outer wall with one or more apertures in radialalignment with said screw-holes, and one or more screws provided insidetheir heads with taper portions, substantially as and for the purposedescribed.

CHARLES F. HOVEY. Witnesses:

\VM. S. BELLows, H. A. CHAPIN.

